Wrench



FIG. 1 is a side view of the wrench.

FIG. 2 is a back view of the wrench.

FIG. 3 is a front view of the wrench.

FIG. 4 is a top view of the wrench.

The other side of the wrench is the same as the side shown in FIG. 1. 

The ornamental design for a wrench, substantially as shown and described. 